The calibration of mm-wave radiotelescopes has been discussed in [1]} and a technical report from the
Institut de Radio-Astronomie Millimétrique (IRAM) 30-m presents the details of the calibration
procedurehttp://www.iram.es/IRAMES/mainWiki/CalibrationPapers?action=AttachFile&do=view&target=kramer_1997_cali_rep.pdf
for that telescope which is representative of mm-wave radiotelescope calibrations.
Nevertheless, there are differences between the GBT and the IRAM 30-m telescope. For example, the GBT
has amplifiers before the heterodyne mixer and has no image sideband.
